Patents by Inventor William S. Edge

William S. Edge has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Elevator roping arrangement
    Patent number: 4807723
    Abstract: In a traction drive elevator system, the ropes from the counterweight are fed over a secondary or deflection sheave to the bottom of a drive sheave, around the drive sheave for more than 180.degree. and then to the elevator car. The sheaves contain polyurethane inserts for the rope. The draw angles, vertical and horizontal, are 1.5.degree..
    Type: Grant
    Filed: October 17, 1983
    Date of Patent: February 28, 1989
    Assignee: Otis Elevator Company
    Inventors: John K. Salmon, William S. Edge